1. Which metal is liquid at room temperature? (Q59) 2. Which blood cells carry oxygen? (Q68) 3. Which planet is known as the Red Planet? 4. Which gas do plants absorb in photosynthesis? (Q55) 5. Which planet is known as the Red Planet? (Q77) 6. Which gas do plants absorb in photosynthesis? (Q65) 7. Which metal is liquid at room temperature? (Q44) 8. What is the SI unit of electric current? (Q21) 9. What is the SI unit of electric current? (Q76) 10. What is the boiling point of water at standard pressure?